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from django.test import TestCase
from .models import (
CompetingTeam, Event, Group, IndividualCompetitor, Membership, Person,
)
class MultiTableTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.alice = Person.objects.create(name='Alice')
cls.bob = Person.objects.create(name='Bob')
cls.chris = Person.objects.create(name='Chris')
cls.dan = Person.objects.create(name='Dan')
cls.team_alpha = Group.objects.create(name='Alpha')
Membership.objects.create(person=cls.alice, group=cls.team_alpha)
Membership.objects.create(person=cls.bob, group=cls.team_alpha)
cls.event = Event.objects.create(name='Exposition Match')
IndividualCompetitor.objects.create(event=cls.event, person=cls.chris)
IndividualCompetitor.objects.create(event=cls.event, person=cls.dan)
CompetingTeam.objects.create(event=cls.event, team=cls.team_alpha)
def test_m2m_query(self):
result = self.event.teams.all()
self.assertCountEqual(result, [self.team_alpha])
def test_m2m_reverse_query(self):
result = self.chris.event_set.all()
self.assertCountEqual(result, [self.event])
def test_m2m_query_proxied(self):
result = self.event.special_people.all()
self.assertCountEqual(result, [self.chris, self.dan])
def test_m2m_reverse_query_proxied(self):
result = self.chris.special_event_set.all()
self.assertCountEqual(result, [self.event])
def test_m2m_prefetch_proxied(self):
result = Event.objects.filter(name='Exposition Match').prefetch_related('special_people')
with self.assertNumQueries(2):
self.assertCountEqual(result, [self.event])
self.assertEqual(sorted(p.name for p in result[0].special_people.all()), ['Chris', 'Dan'])
def test_m2m_prefetch_reverse_proxied(self):
result = Person.objects.filter(name='Dan').prefetch_related('special_event_set')
with self.assertNumQueries(2):
self.assertCountEqual(result, [self.dan])
self.assertEqual([event.name for event in result[0].special_event_set.all()], ['Exposition Match'])
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